Cited by 636Genetic Associations and EpidemiologyGenomics and Rare DiseasesGenetic Mapping and Diversity in Plants and Animals

Searching for missing heritability: Designing rare variant association studies

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Zuk, Or, Schaffner, Stephen F., Samocha, Kaitlin, Do, Ron, Hechter, Eliana, Kathiresan, Sekar, Daly, Mark J., Neale, Benjamin M. +2 more·2014·Proceedings of the National Academy of Sciences

Abstract

Significance: Discovering the genetic basis of common diseases, such as diabetes, heart disease, and schizophrenia, is a key goal in biomedicine. Genomic studies have revealed thousands of common genetic variants underlying disease, but these variants explain only a portion of the heritability. Rare variants are also likely to play an important role, but few examples are known thus far, and initial discovery efforts with small sample sizes have had only limited success. In this paper, we describe an analytical framework for the design of rare variant association studies of disease. It provides guidance with respect to sample size, as well as the roles of selection, disruptive and missense alleles, gene-specific allele frequency thresholds, isolated populations, gene sets, and coding vs. noncoding regions.

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  • Analysis of URVs has had limited success in delivering individual gene discovery in schizophrenia because of power limitations, with only a single gene, SETD1A, identified as robustly associated.

    “However, the analysis of URVs has had limited success in delivering individual gene discovery in schizophrenia because of power limitations, with only a single gene, SETD1A, identified as robustly associated 13,18 .”
  • The most natural grouping for rare variants is within a gene, based on predicted functional consequence or evidence for deleteriousness.

    “The most natural grouping for rare variants is within a gene, based on predicted functional consequence or evidence for deleteriousness 13,14 .”
  • Theory predicts that natural selection will tend to keep large effect risk variants at much lower frequencies in the population, especially in disorders such as schizophrenia that are associated with reduced fecundity.

    “Theory predicts that the forces of natural selection will tend to keep large effect risk variants at much lower frequencies in the population, especially in disorders such as schizophrenia that are associated with reduced fecundity 13 .”
  • Because individuals with schizophrenia have fewer offspring, purifying selection is expected to prevent high-risk alleles from reaching even modest allele frequencies.

    “Because individuals affected with schizophrenia have fewer offspring, purifying selection is expected to prevent high-risk alleles from reaching even modest allele frequencies6.”

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Authors
Zuk, O., Schaffner, S. F., Samocha, K., Do, R., Hechter, E., Kathiresan, S., Daly, M. J., Neale, B. M., Sunyaev, S. R., & Lander, E. S.
Affiliations
Broad Institute (US)
Venue
Proceedings of the National Academy of Sciences
Published
2014-01-17
Volume
111
Issue
4
Pages
E455-64
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1986818660
Cited by
635
References
65
Citations by year
2026: 11 · 2025: 18 · 2024: 36 · 2023: 40 · 2022: 35 · 2021: 64 · 2020: 41 · 2019: 59 · 2018: 52 · 2017: 71 · 2016: 86 · 2015: 70 · 2014: 48 · 2013: 1 · 2012: 2
FWCI
59.70
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
Funders
National Human Genome Research Institute (U54HG003067)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
Keywords
missing heritability, research design, sample size, isolated populations, gene set analysis, de novo mutations, selection coefficients, replication
MeSH terms
Gene Frequency, Humans, Mutation, Genetic Variation, Genetic Predisposition to Disease, Genome-Wide Association Study

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